It took them two years to finally get him out with the help of the government in Shenzhen
https://www.nme.com/news/arm-china-finally-ousts-rogue-ceo-t...
https://www.nme.com/news/arm-china-finally-ousts-rogue-ceo-t...
If you cannot escalate a governance issue to a higher power, the controls are not worth the paper they are written on.